WowAce

A fully featured library tracking all ongoing absorb effects

Keeps track of honor, PvP statistics, BG Marks, and Arena points.

EUF is an enhance of wow original unit frames, provides hp with both value and %, and optional 3D portrait. Simple and Useful.

Automatically sells low quality gray items and selected white items to the vendor.

Keeps track of healing spells cast by everyone in a group.

GridStatusIncomingHeals

Allows you to create icons, which can be customized greatly by user's input. CiR is more than just the usual cooldown tracker.

Shows your standings with the factions.

NRT_EPGP

Keep your pet fed

Displays information about the current zone on the World Map for WoW Classic Era

DeclineDuel

SimpleChatMods

Keeps track of resurrection spells cast in a group

Displays a variety of useful stats for tanking

Lightweight time/date display with optional hourly chime.

Enable/Disable addons for your character in game

Lag tolerance module for Broker displays.

Group interrupt cooldown tracking.

MobHealth